"Friend of" counter

Hello everobody!I'm going to make some blog rating php website and I will need to have a number of people who are reading the given livejournal user.So I've googled and found the fdata opportunity.For my jounal the link "http://www.livejournal.com/misc/fdata.bml?user=ajayver" works Ok, and I can just count the quantity of "<" symbols in this bml file to get the exact number of readers. But, for examle, I'm trying to use the same link for the journal of "dubrovskaya" user (http://www.livejournal.com/misc/fdata.bml?user=dubrovskaya) and the bml file contains only ~2600 lines, while there snould be more than 4000 readers...Does anyone know what am I doing wrong, or is there any other way to make the "friend of" counter?Thank you!